Many people think that the differences in how lenders calculate fixed-rate mortgage penalties are a non-issue now that rates have fallen to ultra-low levels. Nothing could be further from the truth!

In actual fact, the relative cost of how penalties are calculated is never more pronounced than when fixed-mortgage rates stay flat or rise slightly over an extended period – exactly the scenario that many experts predict will unfold in the coming years. (To put that in dollar terms, you could be looking at an extra $7,000 in penalty cost on a $250,000 mortgage that is broken two years early.)

Fixed-rate mortgage penalties are almost always calculated based on “the greater of three months interest or interest-rate differential (IRD)”. But there are key differences in the actual rates lenders use to calculate your IRD. In today’s post I will show you how those differences are magnified in a flat or slightly rising interest-rate environment. We’re not talking small potatoes here – today the IRD calculations used by some prominent banks come with a penalty that is more than five times what you would pay at a wide range of other lenders.

Let’s start by assuming you have a current balance of $250,000 on a five-year fixed rate mortgage at 2.59%. We’ll also assume that you are three years into your term (with two years remaining) and that interest rates are the same when you break your mortgage as they were when you first got your loan.

First, we calculate the cost of three month’s interest, which we can quickly determine is $1,619.

Here is the formula we use to arrive at that number:

We then compare this cost to the cost of your IRD penalty, which will almost always be calculated using one of three methods: Standard, Discounted or Posted.

**The Standard IRD Penalty**

When using a standard IRD penalty calculation, your lender starts by taking the difference between your contract rate (2.59%) and their current rate that most closely matches your remaining term. Since you have two years left on your mortgage, that would be the lender’s two-year fixed rate (we’ll use 2.29%, which is widely available today). The difference between these two rates is 0.30%.

The lender multiplies this difference (0.30%) by your mortgage balance ($250,000) and the time remaining on your mortgage (expressed as the number of months remaining on your mortgage divided by twelve).

And here is a table which explains where each number in the formula came from:

That’s it. If you understand this example, then you have mastered the standard IRD calculation. It is used by a wide range of lenders who compete with each other to offer borrowers the best mortgage rates available.

In this case the cost of three months’ interest ($1,619) is greater than the lender’s Standard IRD calculation ($1,500), so you would have to pay $1,619 to break your mortgage.

But here is where a little knowledge can save you some serious money. Other well-known lenders have tweaked their IRD calculations to skew the interest rates used in their formulas heavily in their favour, and as you will now see, that can have a huge impact on the size of your penalty.

**The Discounted Rate IRD Penalty (Used by RBC, BMO, TD, Scotia and National Bank) **

When using the Discounted Rate Penalty, the lender takes your contract rate and compares it to the posted rate that most closely matches your remaining term MINUS the original discount you got off of their five-year posted rate (which in this case is 2.05%). Here is the contract wording taken straight from TD’s website. I have underlined the key section:

*[Your contract rate will be reduced by] the current interest rate that we can now charge for a mortgage term offered by us with the term closest to your remaining term. The interest rate will be our posted interest rate for the term minus the most recent discount you received.*

In other words, this lender will take the discount they gave you off of their five-year posted rate and apply that same discount to the posted two-year rate they use in your penalty calculation. This tweak makes a big difference to the cost of your penalty and is blatantly one-sided because lenders don’t discount shorter-term fixed-rate mortgages nearly as deeply as they do their five-year terms (.30% vs. 2.05% using this same lender’s rate sheet as of today).

The table below shows you the key numbers used to calculate the Discounted Rate IRD penalty:

I know. Ouch.

But fasten your seat belt because other major lenders dig even deeper into your wallet. The Grand Daddy of them all is the Posted Rate IRD Penalty.

**The Posted Rate IRD Penalty (Used by CIBC) **

Here is the a breakdown of CIBC’s posted-rate penalty calculation:

In this variation, the lender calculates your IRD penalty using the five-year posted rate that they were offering when you got your mortgage. Here is a sample of the wording used to explain how the penalty is calculated (taken from CIBC’s website). I have underlined the key sections :

*The interest rate differential amount is the difference between the Interest on the Prepaid Amount for the remainder of the term at the posted rate at the time you took out the mortgage, and interest on the Prepaid Amount for the Remainder of the Term using a Comparable Posted Rate. Interest is calculated at the interest rate posted by [the lender] for a mortgage product similar to your mortgage product on the date the payout statement is prepared.*

Now CIBC’s defence of this tactic is that they substitute posted rates for both your original rate and the rate that most closely matches your remaining term. But as we have already outlined above, this is a terrible trade that no informed person would make because Big Six lenders must make huge discounts to their five-year posted rates to make them competitive with market five-year fixed rates, and those same discounts shrink dramatically on shorter fixed-rate terms.

If we used the same rates in this example that we used in the discounted-rate method outlined above, the posted-rate method would yield the same sized penalty. But CIBC’s posted rates tend to be higher (which they were at the time this post was written), and for that reason, their penalties earn the moniker of “The Grand Daddy of Them All”.

Here is what that tweak to the wording in your contract does to your penalty:

Surprised? Don’t be. These inflated mortgage penalties generate substantial profits for the lenders who use them and when uninformed borrowers choose to negotiate directly with their lender, is it that hard to imagine that some of those lenders would tweak the fine print in their favour?

To be clear, I don’t have a problem with mortgage penalties in principle. When you break a mortgage contract, your lender incurs costs when they unwind agreements related to your loan (these agreements can relate to hedging, servicing, securitization etc.). The penalty charged is supposed to cover these costs while also recouping part of the lender’s lost profit. Fair enough. That’s why they’re called “closed mortgages”. But is it fair for some lenders to use these early terminations as “gotcha” moments?

I don’t think the vast majority of Canadian mortgage borrowers have any idea that there are significant differences in the way fixed-rate mortgage penalties are calculated, and the largest Canadian lenders, who have milked that lack of awareness to their advantage for years, have been in no hurry to explain it to them.

While our federal government has repeatedly acknowledged the public’s pain and frustration over these unfair practices (which can easily be referenced with a Google search for “Canadian mortgage penalties”), it has been frustratingly slow in forcing lenders to provide more transparent disclosure.

In the meantime, a conscientious and well informed independent mortgage planner should be able to explain how penalties are charged by any lender they are recommending.

Forewarned is forearmed.